Tripping mechanism foe



C. F. FRAUENBERGER TRIPPING MECHANISM FOR CREASEHS, CUTTERS, AND THELIKE Filed March 10 1925 3 Sheets-Sheet 1 5m! fikum/m w ammm @51 1, TM 0m fl W May 11 1926. 1,584,446

c. F. FRAUENBERGER TRIPPING MECHANISM FOR CREASERS, CUTTERS, ANDTHE'LIKE Filed March 10, 1925 3 Sheets-Sheet 2 lav .2

QE TjB 25 C. F. FRAUENBERGER TRIPPING MECHANISM. FOR CREASERS, CUTTERS,AND THE LIKE Filed March 10 1925 3 Sheets-Sheet 5 entree CARL F.FBA'UENBERGEE, OE LONG ESLAND CITY, HEW YORK, ASSIGNOR TO S. H.

ROSENBERG, O33

l lit lAte l FlCE.

XZLYN, NfElW YORK,

TRIPPING I/XECHANISM EOE CEEELSEREFS, CUTTE PJES, AND THE LIKE.

Application filed March 10, 18635.

'lhis invention relates to tripping mechanisms for heavy duty platenprinting presses, creasers and cutters, and like niachines embodyingafixed he'd against which the platen is operated for printing, cuttingor creasingpurposes.

lil ore particularly this invention relates to such machines asaforesaid which include a mechanism for setting or adjusting the platenin order to adjust the impression for aparticular job or "for purposesof talting up for wear or for other reasons.

[the object of this .rvention is to provide a tripp mechanism forautomatically tripping the platen or throwing oil the int sion when suchaction becomes desir- .e or necessary and again untripping the platen.

' The invention is embodied in a mechan :in which may he set to trip thepress automatically irrespective of the adjusted position of the platenand it includes means I automatically untripping the press irrespectiveof the adjusted position of the platen, all set forth in the followingspecification and as illustrated in the acshying; drawings in which irel is a side view of a press equipped with a trippingmechanism embodyingthe inventio i5 is similar view showing the tion and with parts inFigure 0 is detail view of the sheet holding means.

F k We l is a front View showing the tripping meahanisi'n partly insection and partly hrolzen away.

Figure is a transverse sectional detail riew of parts of the tippingmechanism.

Referring to the drawings the invention is disclosed in connection witha well known type ot cutting and creasing press. The 'iress is shownonly in outline and is idenby the trams 1, which is provided h a.stationary bed 2 against which the .en 93 operates in the'us'ual manner.The en is carried by a shattd jo-urnaled in Til-16S 5 which are providedwith a (S which rides on tracks 7. The con *ction alike on both sides ofthe press, only the one side illustrated. The side frames are operatedto oscillate the platen by means o-t' connecting rods 8.

Serial No. 14,366.

The connecting rods 8 are not directly connected to the ends of theshaft t but are mounted on sleeves 9, which are bored eccentrically at10, Figure 1, to receive the ends of the shaft Each sleeve or hearinghas an upstanding arm 11, and the two arms ll, one on each side of thepress, are connected by a cross bar 12, which is called the platenadjust 1 bar.

i'ifieans are provi ed for locking the arms ll with their eccentricsleeves 10 to the pl..tcn frame in various positions of adjustment. Tothis end the bar 12 carries a pin 13 which slides in a bore 14 in thebar. 'ihe pin has a. dog is which enters a hole 252 in a pawl 20. Thelatter is adjustable circumfere-ntially of the frame by engageinent withany one of a. set of notches 16 on the frame. The pawl 20 is set in saidnotches by screw 21 which moves in a slot, not shown.

Thus by setting the pawl 20, the position of the hole is varied and whenthe dog drops into the hole 22, the angular positions of the arms 11 andsleeves 9 are varied correspondingly to rotate the shaft 4L to adthepressure or the platen. This con structi on is old in presses of thistype.

The pins 13 are secured to an adjuster handle bar 18 which thus connectsthe two or more dogs on the machine. Ordinarily the dogs are disengagedfrom the holes 22 in the notched pawls by lifting the handle oar upwardsor pushing it down to re-enthe logs and holes 22.

The construction so tardescriloed and illustrated is common to this typeof press and well known in the art. The adjustment of the eccentr csleeves permits a variation in the imprc. ion pressure and suchadjustments are of course made while the machine is at rest. it is,however. also desirable and necessary to be able to instantly throw of?the in'ipression or trip the platen while the press is running. whenevera faulty sheet of paper is placed on the platen,

which, it allowed to complete its iinpress'on st as, would causeprinting, cutting or e go the dogs 15, whereupon the memh i 9, 11, 12,16and associated partsl'all by gravity Ina'c'locl: wise direction, the bar12 coming to rest on stops 24: provided on the platen frames in a usualand well known bar 1s, however, both difficult and unsafe while thepress is in motion, and cannot always be performed in time. Again, thesemachines are rapidly being provided with automatic feeders in which caseit is obvious that an automatic tripping mechanism must be provided totrip the press whenever a sheet fails to. be placed on the platen inproper position, or when a faulty sheet is fed to the platen.

Again, when one of these presses is equipped with an automatic feeder,it is also equip 39d with an automatic delivery or means for removingthe sheet from the platen. I

Such an automatic feed and delivery is disclosed in the U. S. PatentNumber 1,515,572 and this invention presupposes the presence on thepress of some means, such as disclosed in the said patent, for seizingthe sheet prior to completion of the impression stroke for the purposesof removing the sheet.

Figure 3 shows such sheet seizing means as being embodied in a deliverygripper 25 comprising two jaws or finger 26 and 27. The finger 26carries properly insulated electrical contact 28 connected by a wire 29to a solenoid 30. The latter is connected to the motor 31 which drivesthe press. The motor is grounded by a wire 32.

As described in the patent aforesaid, the

gripper is adapted to seize the sheet just prior to impression, thegripper entering a cut out portion 33 in the bed 2. Afterimpression thegripper removes the sheet. I Referring now to the. automatic trippingmeans, the same are embodied in a mechanism for automatically operating;the handle bar 18 to disengage the dogs 15 from the notched pawls 20.

As shown in Figure 4: there is provided a bar operating membercon'iprising a shaft S 1, having a sleeve 35 adapted to re eive thehandle bar 18 endwise thereof. The shaft 34: carries: "am 36 and thesleeve 35 carries a similar cam 36. The sleeve is out out as at 37 topermitthe pin 38, which connects the pin 13 and bar 18, to be driventhrough these two members.

The shaft 34: is journaled in bearings 89 having an elongated hole 40 toreceive the shaft. Outside the bearing, the shaft is connected throughan arm 11 with a link 61 to atrip lever 42 pivoted at The trip lever hasfive notches 44 below the. pivot 18. The numeral i5 denotes a shaftwhich has its bearings in a floor stand 46 and a bracket 41-7 secured tothe press, Figure 4. On said shaft 1-5 is mounted a handle 67 and atrigger lever {is connected by a sleeve 50,

Adjacent the trigger lever 48 is a plate 51 which is fixed and which isprovided with five holes 52. On said floor stand. 16 there is furtherpivoted a pawl 53 which is kept in engagement with a tooth 54 on thesleeve by a spring 55. At 56 there is pivoted a trigger 57 having ahandle 58. The trigger has a squared portion which bears against thepawl 53. The solenoid 30 is suitably mounted on the frame of the press.The core 59 engages the trigger handle as shown. A spring 60 tends tomove the trigger to the left in Figures 1 and 2. The aforesaid earns 36are provided with steps 62 and 63 and have a flat portion 6 1 and acurved cam portion 65. A- stud 66 is adapted to be inserted in any oneof the holes 52 in the plate 51. The latter may conveniently form a partof the casting 47 for the support of the aforesaid pivot 43 and shaftd5.

The operation is as follows: Assuming as shown in the drawing that thepawl 20 is adjusted to engage notch 68 Fig. 1 of the notches 16 which inthis case would be fourth notch counting in an anticlockwise direction.Then stud 66 is inserted in the corresponding hole of the holes 52. Allas shown in Figure 1. During the normal running of the press the platenwill there fore be set at adjustment four and will move from theposition shown in full lines in Figure 1 to the position shown in dottedlines therein. And the connected parts will similarly be moved fromclosed to open position. Vhile the press is thus operating the triggerlever 48 will remain in its normal position as shown being held there bythe pawl 53.

lVhenfor some reason or other a sheet fails to be fed to the platen oris mutilated so that the gripper 25 cannot seize the sheet, the contact28 will contact with the gripper jaw 27 and complete the circuit throughthe solenoid 80 which thereupon will draw its core 59 to the rightagainst the action of the spring 60 and consequently move the trigger 57to cause the squared .portion thereof to disengage the pawl 53 frombeneath the tooth 54. The trigger lever 48 will new fall by gravityuntil stopped by the stud 66. This occurs near the end of the impressionstroke and as the trip lever 12 continues to move one of its stops 4 1will engage the tripper lever L8 with the result that the upper end ofthe trip lever is stopped short of its final normal position and throughthe instrun'ientality of link 61 and arm 4-1 the shaft 3% is rotatedwhich brings the curved cam portion on top of the adjuster bar 12 toraise said shaft 3 in the elongated hole 4-) in the bearing 89.

' he resultis that the adjuster handle .18 lifted as shown in Figure 4-to withdraw the dog 15 from the notched pawl 20. This condition ispictured Figure- 2. Turned? ately thereafter the'impression stroke iscompleted but the eccentric sleeves 9 have been turned and fall bygravity to rest on step 2 1, such fall causing a partial rotation of theeccentric bores in said sleeves J'and trips the platen.

The continues itsmotion and the parts move down into the dotted positionshown in Figure 2, the platen remaining tripped which condition willcontinue until it is again untripped.

The untrippi-ng of the platen is accomplished by the operator takinghold of the handle 67 and throwing it forward to the left in the drawingto rotate-sleeve 50 and trigger lever 4:8 until the latter is stopped bya second stud 7O placed in hole four of the series of holes 71 in theupper part of the aforesaid plate 51. This position is shown in dottedlines in Figure 2. When new the trip lever -12 swings to the right onthe opening stroke of the plate, notch number four of the series ofnotches in said lever above its pivot 13 strikes the upper end oftripper lever 18, the lever will be stopped and prevented from furthermovement, and as the platen continues its movement the said lever 42through the link 61 and arm 4-1 will rotate shaft 31 with the cams 3'3to bring the tlat or low portion (ti tof the cam on top of the adjusterbar 12. This movement occurs at the end of the outward movement of heplaten and causes the shaft 3 to move bodily in the elongated holes 10toward the shaft 1 to again cause the dog 15 to engage the hole 22 inthe pawl 20. The parts are now in the same position as shown in fulllines in Figure 1, that is the platen untripped and moves forward on theim pression stroke. The parts are now in normal posit-ion.

it will be seen from the foregoing that the trigger lever 18 acts as anabutment for the lower end of the trip lever 12 to arrest the motionthereof to untrip the press at the end of the closing or impressionstroke of the platen. That by arresting the movement of said lever 12the shaft 3 1-. is raised by the rotation of the cams 86. The rotationof the cam being stopped by the stop (12. lhe untripping of the platenis also accomplished by the trigger lever a8 acting an abutment toarrest the movement of the upper part of the lever 4-2 by engaging aparticular notch of the series of upper notches 72 which, as the platencontinues its opening moven'ient, causes a rotation in the oppositedirection of the shaft and cams 236 to lower the dog 15 intoengagen'ient with one of the notches 16, the movement of the cam in theopposite direction being stopped by the stop 63.

Figure 2 shows in full lines the parts in their:respectiveposition atthe moment the gripper contact 28 completes the circ'i'rit through thesolenoid 3O andcauses the trigger lever 18 to fall with the result asdescribed; it also illustrates in dotted line the parts at the extremeof the opening stroke in untripping position. The untripp ng of. theplaten back into normai position is ilhistrated in Figure 2 with theupper part of lever 1-8 arresting the opening movement of lever 12 indotand dashline, which also includes the back to normal positions of thelink 61, arm 11 and arm 11.

It foliows from the foregoing that no matter what the adjustedrelationship is between the eccentric sleeves 9 and theplaten 3 thepress may be automatically tr ped and untripped'by placing the studs 66and 70 respectively inthe proper corresponding hole in the series ofholes and "[2. After the untripping of the press and if the gripperstalre hold of a succeeding properly fed sheet the circuit through thesolenoid 30 is brolren andthe spring restores trigger to normal uprightposition and when the operator has moved handle 67 back to normalposition or neutral position as it'wetre, the pawl 53 is forced inunderthe tooth 541 to maintain the parts in such normal posi tion whereby tospring the lower end of the tripper lever 48 out of the way of the lowerend of lever 12 to permit the latter to operate without tripping thepress. The foregoing thought 'tofully describe this invention and theoperation thereof. It will be seen that the only attention required bythe operator is to place the stuns 66 and T0 in the respective properpositions COYI'GSPCDtllHg with the adjustment of the platen at which thepress will be automatically tripped in the event a sheet fails to beplaced thereon. The press will continue operating tripped until theparts are restored. The untrippin'g is accomplished automatically afterthe operator has thrown the handle 67 as aforesaid. Thus all injury tothe press caused by the abs-e cc of a sheet on the platen avoided.

It will have been understood from the foregoing that the adjustingmechanism comprising the dog 15, the pawl 20 and notches 16 isduplicated at both ends of the press. Preferably a third cam, not shown,will be used on the other end of the press. Such third cam mayconveniently be conne'cted'to the sleeve 35 by means of a tube SO'suchas indicated in Figure 1. A suitable housing 81 is also employed for theconvenient guidance of the pin 18;

It will further be apparent that the tripping mechanism is not entirely"dependent upon the presence of the sheet holding means,v exceptforautomatic ope 'ation as aforesaid. The-tripping mechanism may bemanually actuated by the operator placing the-trigger 48 in. theposition required. to trip amputee M v a lVhile I have disclosed myinvention in its preferred form, nevertheless I do not Wish to belimited to the exact details shown,

anism irrespective of the adjusted position of the platen. I

2. The combination of a platen press and its mechanism for adjusting theposition of the platen therein, a tripping mechanism for tripping theplaten, means for automatically operating said tripping mechanism anddevices for adjusting said operating means to correspond With theadjusted position of the platen. v

3. The combination of a platen press and its mechanism for adjusting theposition of the platen therein, a tripping mechanism and means forautomatically operating said tripping mechanism to trip and untrip theplaten irrespective of the adjusted position thereof.

4. The combination of a platen press and its mechanism for adjusting theposition of the platen therein, a tripping mechanism for said platen,automatic means for operating said tripping mechanism and automatic'devices for actuating said automatic operating means irrespective of theadjusted position of the platen. p

5. The combination of a platen press, mechanism for adjusting the platenthereof in a predetermined position, means for tripping said plat-enirrespective of its adjusted position, automatic actuating means for thesaid tripping means and devices for adjusting said actuating means tooperate said tripping means at a predetermined time corresponding to thesaid adjusted position of the platen. i

6. The combination of a platen press, means for adjusting the platentherein in any one of the several difierent predetermined positions,means for tripping said platen, means for actuating said tripping meansand mechanism for adjusting said aetuating means to correspond with thead justed position of the platen whereby to cause the tripping means toact irrespective of the adjusted position of the platen.

'7. The combination of a platen press, means for .adjusting the platenthereof in any one of several diii'erent positions, means for trippingand untripping saidplaten, means for actuating said tripping anduntripping meansand devices for controlling said actuating means tocorrespond with the position of the platen whereby to cause the trippingand untripping means to act irrespective of the adjusted position 01 theplaten.

8. The combination of a platen press, means for adjusting the platentherein, means cooperating with said adjusting means for tripping theplaten at the end of the impression stroke thereof andactuating meansfor said adjusting means operable in point of time to correspond withthe said adjusted position of the platen.

9. The combination of a platen press, means for adjusting the platentherein, means cooperating with said adjusting means for automaticallytripping said platen at the end of its impression stroke, actuatingmeans for said tripping means and devices for adjusting said actuatingmeans to cause the tripping means to operate automatically and in timecorresponding with.

the adjusted position of the platen.

10. The combination of a platen press, means for adjusting, the platentherein, means for tripping the platen, mechanism for actuatin saidtripping means and means for controlling the operation of said actuatingmeans to correspond in time with the adjusted position of the platen.

11. The combination of a platen press, mechanism for tripping anduntripping the platen therein, means for adjusting the position of saidmechanism with respect to the platen and means for automatically causingsaid tripping and untripping means to act irrespective of the adjustedposition thereof.

12. The combination of a platen press, mechanism for automaticallytripping the platen therein at the end of the impression stroke andautomatically untripping the platen at the end of its opening stroke,means for adjusting said mechanism in pre' determined positions withrespect to the platen and means for actuating said mech anism to actirrespective of its said adjusted position.

13. The combination of a platen press, mechanism for tripping anduntripping the platen therein, a lever, automatic means for positioningsaid lever to actuate said mecha nism to trip the platen before theimpression stroke is completed and manually operated means forpositioning the lever to actuate the said mechanism to untrip the pressat the end of the opening stroke of the platen.

1 1-. The combination of a platen press. a gripper for seizing the sheetto be acted upon prior to the completion of the impression stroke of theplaten of the press. means for tripping the platen, a lever foractuating said tripping means, devices 'for maintaining said lever in anormal neutral position and means for automatically causing said devicesto permit said lever to move by gravity into position to actuate thetripping means when said gripper fails to seize the sheet as aforesaid.

15. The combination of a platen press, a gripper for seizing the sheetto be acted upon prior to the completion of the impression strolte ofthe platen of the 'press, means for tripping the platen, means foradjusting the position of the tripping means with re spect to theplaten, a lever for actuating said tripping means, devices formaintaining said lever in normal inactive position and means forautomatically releasing said lever to permit the same to move by gravityinto a position predetermined to correspond with the said adjustedposition of the trip-ping means to actuate the latter to trip the platenwhen said gripper fails to seize the sheet as aforesaid.

16. The combination of a platen press, means for tripping the platen ofthe press, means for adjusting the said tripping means with respect tothe platen, a lever adapted to be positioned in one of severalpredetermined positions to cause the tripping means to act at apredetermined time, mechanism for keeping said lever in a normalinactive position and electrically operated releasing means to permitthe, lever to move by gravity into the said predetermined posit-ion.

17. The combination of a platen press, mechanism for tripping anduntripping the platen thereof, means for seizing a sheet prior to theimpression of said press, gravity operated means for actuating saidtripping mechanism, electrically operated means aotuated upon thefailure of the sheet seizing means to seize a sheet before theimpression of the press for permitting said gravity operated means toact to cause the tripping of the press and a manually operated memberfor positioning said gravity operated means to cause the trippingmechanism to untrip the tripped platen of the press.

18. The combination of a platen press, means for adjusting the platenthereof in any one of a plurality of predetermined positions, mechanismfor tripping and untrip-- ping said press, a lever for actuating saidmechanism and means in the latter cooperating with the said lever forcausing the tripping and untripping of the said platen at points duringthe operation of the press corresponding to the adjustment of the platenas aforesaid.

19. The combination of a platen press, mechanism for tripping anduntripping the same, means for adjusting the said mechanism in any oneof a plurality of predetermined positions with respect to the platen, alever for actuating said mechanism, a member in said tripping having aseries of notches, any one of which is adapted to coact with the saidlever to actuate the said mechanism to trip the platen corresponding tothe adjusted position of the said mechanism, said lever having a secondseries of notches, any one of which is also adapted to coact with thesaid lever to actuate the said mechanism to untrip the platencorresponding to the adjusted position of the said mechanism.

20. The combination of a platen press, a gripper for seizing the sheetto be acted upon by the platen of the press, a mechanism for trippingand untripping the platon, a gravity operated lever for actuating saidmechanism, a member in the latter having a series of stops cooperatingwith the said lever to actuate said mechanism to trip the platen inpositions controlled by the said stops, said member also having a secondseries of stops adapted to cooperate with the said lever to actuate thesaid mechanism in positions controlled by said second series of stopsand corresponding with the positions of the tripping mechanismcontrolled by the said first named series of stops.

21. The combination of a platen press, mechanism for tripping the.platen thereof, a lever movable by gravity into several differentpositions, means for stopping said lever in any one of a number ofpredetermined positions, a member in said tripping mechanism having aseries of stops corresponding in number to the number of predeterminedpositions aforesaid, mechanism for maintaining said gravity operatedlever in normal inactive position and means for releasing said lever tomove into one of the said predetermined position to engage a corresponding stop in the member aforesaid to cause the said trippingmechanism to act.

22. The combination of a platen press, mechanism for tripping anduntripping the platen thereof, a gravity operated lever held in normalinactive position and adapted when released to move into any one of anumber of selected active positions, means for stopping said leverautomatically in any one of the said active positions, means in saidtripping mechanism adapted to cooperate with the said lever in any oneof its active positions to cause said mechanism to trip the platen, adevice for manually moving said lever into another series of activepositions corresponding to the active positions aforesaid and othermeans in said tripping mechanism adapted to coact with the said lever inany one of the said other active positions thereof and in accordancewith the position in which the platen Was tripped as aforesaid to causethe said mechanism to untrip the platen.

CARL F. FRAUENBERGER.

